343 can't make explosions

This seems to be a trend across all of 343’s titles, but their explosions look rubbish. The grenade explosions, particularly the plasma and spike grenades look god awful and are so small when compared to the actual radius of the damage.

How did we go from amazing looking explosions in Reach to these pissweak looking firecracker things that look like they were from 2004.

I get that it’s really nitpicky, and it’s not at all a deal break for me, but it really is a shame when the rest of the game does look quite good.