This season, yes. But if you compare Sterling's best season, the one with Uruguayan, that season was better than Sane's best.That's the beauty though, being soft or over playing are probably 2 of the easiest things to rectify in a young player. Cristiano Ronaldo was both. Sane has the ability in spades, don't care what anyone says but I'm 100% of the belief that Sane is better than Sterling and will always be better.
Yes, Sane seems to have more technical capabilities, but let's not rush to crown him just yet. 3 years from now both should be rounding into their peak, when the truly good pull away from the potential. We'd know for sure then.
Right now they are both inconsistent kids with high potential.