After reading some of the pages in this board, I must say...the disrespect!
People who refer Queengis and A. Radwanska as "pushers" in their strategy of play are just trolls. It's that or they just fail to see and appreciate the sheer brilliance behind their crafty play.
Well, back on topic. We can't really have a definite and accurate evaluation of this particular Peak vs Peak discussion because one, Hings have already retired and have accomplished many achievements in relevance of the high level of play she had shown in her best times. We saw her brief stint of dominance and develop as a player until the end of her career. From this, we can certainly point out which months or years did Peak Hingis did rose. Now unlike her, Aga hasn't even reached her A+++ game yet in a sense that she's still quite young and have many opportunities to hone and strengthen the build of her game. Of course, there are still a bit more factors that could affect this discussion like the period in which they played and what not.
If I have a say in this H2H, this post sums up my opinions nicely.
That said on the thread title Hingis easily. Radwanska actually looks very underpowered compared to Hingis, Hingis could even play like a ball basher and beat Radwanska that way if she wished.
Also while Radwanska might be almost as smart and play with almost as much guile, her placements and directional control, and ability to take the ball early and time it so well, is nowhere near the same level.
Both are known for their intelligent use of the court and as well as variety in their shots. However, there are differences in their game that sets one apart from the other.
Hingis takes the ball relatively early compared to Aga. This has its merits as it reduces the time her opponent can react thus compensating with the general lack of power in Hingis' groundstrokes. (However, Hingis' backhand dtl is quite vicious enough to surprise the opponent) Yes, Aga does have a good grasp with her angles but so as Hingis. It seems to me that Hingis excels on almost every aspect Radwanska is deemed to be good at. Overall, a better execution of play by the almighty Queengis. Now, another thing I noticed is that she plays offense-to-defense, and vice versa quite well. It is as if she has the initiative to play aggresively all the way when she knows she can easily overpower or outmaneuver her opponent, or quickly adapt to her defensive tactics if she's the one being overpowered. I think Aga lacks that as I see her playing in a passive manner most of the time.
So yeah...go Hingis!