Personally I found HL2 very droll. It was boring and acted more as a showcase for physics and the mavity gun than it did as a game. The environments changed, but they were consistently boring and square.
Of course the graphics are better, as are the shader effects, characters, enemies, weapons. I also find the multiplayer better (compared to HL2 Deathmatch).
The only thing that Half Life 2 does better is story, however Gears of War had the better storyline, they just told it very poorly.
I just find the engine, weapons, gameplay, design, enemies, lighting, effects, set pieces and multiplayer all better in Gears of War. Maybe as a designer I look at games differently, I don't know.
Of course the graphics are better, as are the shader effects, characters, enemies, weapons. I also find the multiplayer better (compared to HL2 Deathmatch).
The only thing that Half Life 2 does better is story, however Gears of War had the better storyline, they just told it very poorly.
I just find the engine, weapons, gameplay, design, enemies, lighting, effects, set pieces and multiplayer all better in Gears of War. Maybe as a designer I look at games differently, I don't know.