I see Tories such as James Cleverley trying to say how tough the Tories are on sleaze, based on the Conway episode:
Once the Standards & Privileges Committee made their report Derek made an immediate apology. He didn't squirm, he didn't hide and he didn't blame a great left-wing conspiracy.
Hang on a minute - didn't he say something about "administrative shortcomings" ? (pull the other one).
Compare the situation with that of Haine (sic), Alexander, Harman and Livingstone. What will it take for Gordon Brown to stop dithering and make a stand?
The real comparison to be made is that in the Labour cases cited there is no suggestion of the named politicians actually personally benefiting financially from any misdeeds. In the case of Conway, this is the case, respective to his family.
So, I don't think there is any room for the Tories to crow on this one.