Actually, some of the uncapped players like Shreyanka Patil (RCB), Kanika Ahuja (RCB) and Saika Ishaque (MI) did quite well with the bat and ball (there are a couple of more) and on the other hand capped players like Deepti is disappointing with the bat so far. Another name is Renuka Singh, i consider her a fine bowler but she's going in a different direction.
Overall batting performance is not up to the mark (Capped players) if we leave Mandana, Shaifali, Jemimah and Harman. Richa Ghosh has a bright future and clean hitter of the ball so I'll give her the benefit of the doubt and a long rope.
@Haunebu pointed out an important aspect. You countered his point with Men's team example. I'd say In professional sports, being athletic is also very important. It's not related to skill at all but endurance, it reflects clearly when you are chasing the ball or running between the wickets, these are important parts as well.
Being a skilled batter or bowler is a necessity but at the same time, if you are athletic on the field, it enhances your performance and 2-3 seconds difference can make a big impact in crunch moments like you can save runs, steal extra singles, can take blinder catch etc and if you are strong then can hit big too with the bat. We do have a fine example of Jemimah Rodrigues. She's not big so can't hit sixes much (although she's a skilled batter) but when she's on the outfield or running between the wickets she looks gorgeous.
Well.. it's a mixed bag. I saw one match where Saika Ishaque picked up two wickets for 26 runs (her second match in WPL, against the Royal Challengers Bangalore Women). She was quite impressive. And I agree on Deepti and Renuka. In case of Deepti, it is surprising, since she was on good form during the world cup. Renuka is out of form for the last few months, so it was expected. Top Indian players in general have performed well, including Harmanpreet, Shafali, Shikha, Smriti and Harleen.
One of the most frustrating things that I have noticed so far in the WPL has been the poor fielding from some of the Indian players. In T20 format, where the winning margin can be very thin, these missed chances and additional runs may prove decisive in the end. Even capped Indian players were dropping easy chances and giving away runs in the form of misfields. I guess quality coaching by the franchises and a strict training regimen will make an impact on this sector within the next 1-2 years. But again, it has to do more with the fitness level than the body build.