There is a fundamental flaw with the question because love is an emotion like all other emotions. It grows stronger and ebbs away over time base on the experiences in your life.
Question to any married person out there: Do you love your spouse more today than the day you met them? Do you love them more today than the day you proposed or were proposed to as the case may be? Do you love them more now than the day you married them? If the answer isn't yes to all of these then perhaps you should try to find time to begin courting each other again.
As for Max and Liz....
At the time of the shooting Max loved Liz more, but Liz's love began growing after Max reversed the connection. At the end of Destiny I'd say Max still loved Liz more. During Season 2 its hard to say who loved whom more. It is obvious they both loved each other but based on their actions I can't tell, it would require me to have the ability to connect to both of them and compare the feelings. From Busted through Control I'd say Liz loved Max more. After that it gets sketchy again until after Chant Down Babylon where I think there love for each other sort of evens out.... and I like to think that after the wedding night it sort of blended together via their connection.
But the point of the matter is there can be no simple definitive answer to this question. I've seen a lot of argument over what the events of season 2 meant to there love and while I'm not going to give a huge argument over it I think I am going to post a sneak preview snip from a fic that I haven't posted yet.... this is a re-write from a conversation in Busted.... the way it should have taken place:
"Liz, I just want to put everything that happened behind us."
Liz retorted, "Yeah, you know what? I would, too, if I had impregnated an alien killer who murdered one of our best friends and then left the planet with my unborn child."
Max looked up with pain in his eyes, "So you're still holding on to that?"
Liz softened a little, "It's hard not to, Max. See, you slept with Tess, and then you got her pregnant. I don't know how to just move past that. You hurt me, you know?"
Max's face once again wrenched in pain, "And you didn't hurt me? I told you I needed you. I told you you're what kept me alive and you ran from me. When you came back I fought for you until you made it clear that I wasn't what you wanted any more. For nearly a year Liz you could have had me at the snap of your fingers. Three months of it you spent in Florida. Then I was trying to win you back all you had to do was accept."
"Even after that I can think of any number of four word sentences that would have fixed everything. Let's try again Max. I still love you. I want you back. If I had heard any of these I would have been yours in a heart beat."
"But you kept telling me I belonged to Tess. When you agreed to go to prom with me I thought maybe that could be the start of us getting back together, but then you gave me that suffocating speech. Do you have any idea how much that hurt?" Liz could see the beginnings of tears in Max's eyes.
"Then Alex dies, you practically blame me. Isabel wanted to leave; I had to blackmail her to stay. Michael wasn't speaking to me. You renounced even our friendship in favor of your crusade to find Alex's killer. Everyone who knows me and cared about me was abandoning me… Do you know I was seriously contemplating suicide that night before Tess showed up?" Now the tears were openly streaming down Max's face.
"So Tess shows up, promises me that she won't abandon me, and offers me a chance to feel something other than pain for a while; and I took it. I will regret that every day of my life. It's the biggest mistake I have ever made. Can we please move past it?"
Liz had tears in her own eyes as she argued back, "It's not that simple."
Max sighed, "Liz, I'm here. I'm not going anywhere. Isabel, Michael, and I, we've lost our only way home. There's no way back. You're the only-- or me to-- you're my only reason. I want to be with you."
Liz questioned, "Tess is pregnant with your child. What about your son?"
Again Max sighed, "There's nothing I can do about that. He's gonna be born in a... in another world, a world that I have nothing to do with. I've accepted it. Liz, you've paid a lot to know me. You've been hurt and you've been put in danger. Now I want to make that up to you. I want to make your dreams come true. Will you let me do that?"
Liz and Max both hurt each other that season... they both could have handled it better... but Liz was 16-17 and Max was 11 in a 17 year old's body. They weren't perfect, but they did forgive. What they felt for each other endured the hardest of hardships and trials and came out stronger on the other side. At times given the situations one of them held a stronger love than the other but there were other time when the reverse was true. But all in all their love survived.
1 Corinthians 13:4-7 Love is patient, love is kind, and is not jealous; love does not brag and is not arrogant, does not act unbecomingly; it does not seek its own, is not provoked, does not take into account a wrong suffered, does not rejoice in unrighteousness, but rejoices with the truth; bears all things, believes all things, hopes all things, endures all things.