fair and square
honestly and according to the rules 诚实;光明正大

We won the election fair and square.
我们光明正大地竞选获胜.

on a par with somebody/something
as good, bad, important, etc. as somebody/something else 与...同样好(或坏、重要等);不相上下;不相伯仲

He doesn't think his salary is on a par with his position in the company.
他觉得自己的薪水与在公司里的职位不相符.

As actors, I would say they were on a par.
作为演员来讲,我觉得他们不相上下.