transparency shader faster then diffuse...

so i have been trying desperately to optimize my game, and I stumbled upon something odd. somehow when using transparency shaders, I am getting a draw call decrease of up to 60% on just about anything in my scene even if shadows are disabled.

I am in android build mode, using unity pro 4 and I'm seriously wondering if the stats even works correctly. if anyone can help me out. it seems that static batching doesn't work well with multiple submeshes either