This is probably the most flawed assumption in this entire thread. Why?
Because for this to even sniff reality, you need your Skullcrown to have 100 crit, 200+ crit dmg, 3000+ atk...and I'm being VERY conservative in those numbers lol...because without decrease defense or increase attack I'm sure you need even higher than that.
Even with my Robar, I don't nuke other teams. Robar is slow so I'm not talking about when he doesn't get a turn, I'm talking about when he does get a turn. He has 93 crit, 185 crit dmg, 2800 atk PLUS decrease defense...and he doesn't wipe anything in classic arena. I get victories because my team ends up winning sometimes, but the point is, with those numbers, he never just "wipes" the speed teams.
F2P accounts will struggle mightily to even come close to the actual numbers that are required to "one-shot" anybody. And Skullcrown is a uniquely great champ, but Robar actually has higher dmg modifiers than she does.
So, having Skullcrown is nice but it means absolutely nothing (like literally nothing) if you don't have the gear that is required to make that hero formidable in arena.
Go ahead and post your Skullcrown stats and prove me wrong.
I'll wait.
I don't use her. I speak from experience being *against* them. And I can tell you I have definitely lost against solo SK teams with my arena offense team (Khatun, Bigun, Abbess, Royal Huntsman). My team relies on going first, and generally kills the other team on the first turn. If they don't die on the first turn, usually I get a second attack. But against SK, I have to open with Bigun's stun, and if it doesn't land, very often the SK kills my team off with counterattacks, and if not, finishes it on her turn.