Hi Aretri,
Interesting question! I have an FTMO Challenge and an Infinity Forex Fund Algo Evaluation, which uses 8cap, and the FTMO and IFF funds both very closely track each other but are not exactly duplicating each other. I am happy with the comparison between FTMO and IFF. Why your 8cap broker is not closely tracking FTMO while IFF is, mostly likely has to do with the 8cap broker and IFF using different servers.
I have been happy with FTMO and Infinity Forex Funds.
Alan,