When I first started playing this game, I thought I had made a mistake in buying it. Same with Cotton. And it just so happens that I ordered both at the same time and it cost almost $100 total.
Both games you have to give a fair chance, then they show their greatness.
I have already played LB more then KoF R-2.
Most people think MotM is better then everything else, but do you remember the PS2-DC situation? It's not nearly as bad, cuz both are worth it, but since PS2 is more familiar and *seem* better, most think PS2 will kick major ass. (Almost the) Same deal.
MotM will definately last longer then Lb, but not cuz of the gameplay. Cuz of the variety.
Mode comparison:
LB:
Story
Survival
Time Attack
Homerun Derby (mini-game)
Markuro<sp?> (mini-game)
MotM:
Story
Survival
Time Attack
First Blast
Cat Walk (mini-game)
Ghost Trick (mini-game)
Blade Arts (mini-game)
Metal Slug<forgot name> (mini-game)
If you got MotM (most likely you do), definetly pick up LB. If you don't, pick up both games. They are both very different.
LB is the most different(grammar?) fighting game on the Pocket, and MotM is a modified KoF style (which was a lot like SamSho2, Fatal Fury, and Gal Fighters).