This team is about mid 6* average quality. I don't think it is super strong, comparing with many other token buyers or farmers. Honestly, your team has much room for improvement as the average quality just reaches 4*.

I am not token buyer or farmer. With my available resource, I build my team up to mid 5* average quality this season. I believe my team can challenge a mid 6* team as an underdog.

Maybe the league tends to group teams with similar qualities together. I have not met a super strong 7*/8*/9* team in league for many seasons.