it's nice of them to have changed your lrp esc for you at no charge. but they might have just accidentally sent you the wrong one back. the best is to speak to the rap again to clarify. he might be more than happy to replace it back for you again.

anyway, yes, the normal sphere from memory is quite different in their specs

check out the specs
http://aedownloads.com/downloads/manuals/Sphere.pdf

http://aedownloads.com/pdf/manuals/8...phere_Comp.pdf