Can I 7* R2D2 with this?

I have had next to no luck with tier 7 wit gear 9 Palpatine lead, g9 Vader, g8 TFP, g8 tarkin, and g7 royal guard all at least level 80 and subbing in stormtrooper on some attempts all are modded out and hit for 500k in phase 2 of tank but I barely even get to move in tier 7 of this event talk about adding insult to injury we already have to be a man down the ungodly speed of the opposing team seems a bit much if you ask me especially since 7* R2 is a requirement elsewhere in game but that's just my 2 cents with no punctuation because I gotta go fast