Trine 2 is 'more' by every metric, but overall is somehow worse. The levels are longer, the puzzles more detailed, the platforming more precise and the combat more intense. But the controls and the game mechanics weren't designed for that. It makes levels a long slog and puzzles a frustrating experience. In Trine 1 there were multiple ways to beat each puzzle. Most could be solved by any of the three heroes, or at least two different ones. This made the game rather easy, but fun. Very often in Trine 2 only one hero can seem to solve the puzzle, forcing you to think a certain contrived way. It feels less natural. And the increased difficulty works poorly with the 'floaty physics.'
Positive points: Same fun mechanics as Trine 1.
Negative points: Designed to be more intense, which makes the game less fun and more frustrating.