The 5612 on 12S would have more power for certain. On 10S it would be comparable or maybe slightly less than a EVF 2 10S.
They do not make a EVF 3 10S look here:
http://www.bvmjets.com/Pages/electric.html
10S 4100 watts 12S 5100 watts big difference!
The 10S Electra's are the way to go for all around performance.
Hope this helps,
Bob