Draw Calls Question

I read somewhere that for ios you should try to stay under 20 draw calls. My game now is at 41 with 37 batched, but it still runs over 35 fps. Will lowering it speed it up quite a bit? And does having that many batched actually make it run like it has less than 41.

The 20 drawcall was the rule of thumb for the pre 3GS generation

so whats recommended for newer devices?