Along with everything else has said, it's like KOTOR 1 and KOTOR 2.
I played KOTOR 2 first and loved it, but the people who played KOTOR 1 had higher expectations, in that, they wanted what KOTOR provided, and not neccerarily anything different to replace this.
The Abe games opened us up to a fantastic dark and witty universe, then MO comes along, and altough it has it's good bits (Which everyone playing it as their first OW game will see), the OW fans will compare it to their other games, and in terms of the dark tone, etc. it lacked this.
Lorne himself is unhappy with this, becuase like everyone has said, the whole PS2- Xbox thing, and time restraints.
When I first played MO I loved it, then it got tedious for me.
You could also say that puzzle games have a harder time adjusting to the 3d format, it's only now that games are truley able to crack it (i.e. Portal).
Hope that was clear, I have a habbit of confusing people.
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