Brushless Setups?

I have been doing some research and this is what I came up with.

Mamba Max, external UBEC made to handle 4s Lipo (Anyone tell me how?) with fan and heatsink mount

Lehner Basic XL 2400

Would that setup give me the same power as the finedesigns truck? I understand that they have bad CS but they are the only company I have read a reveiw of and I really like the power their models have.

thanks again for all the help guys.