Is This Suppose To Work or Not?!?! Rock Star Filia And M&F SA Combo.

[MLG_ALEX_420]

So I invested on Rock Star Filia a bit and fully invested on M&F because I'm trying to get all ms fs fully invested. When I tagged in with M&F, Filias SA 1 activates tag in then when the barrier expires which gives M&F the final stand when the final stand expires it should automatically stun the opponent but it didn't in this case...
I guess rock star filia is not good support for M&F at all :/

I'd say maybe Rock Star is a good support for OverClocked because of the barrier, but I'm very disappointed that the final stand didn't stun.