Possibly. The running time for the Victoria Line is about five minutes quicker between the two. There is cross platform interchange between Piccadilly w/b and Victoria s/b at Finsbury Park. The change at Green Park is far less friendly involving three flights of stairs (though there is lift access but of course that would usually take longer). Although this is nowhere near as long as changes to/from the Jubilee (with the Jubilee Platforms seemingly somewhere under Buckingham Palace by my reckoning
). But it's still a hoof. But even with immediate connections at both ends, I doubt there'd be much, if anything, of an advantage
I think the Jubilee running time advantage is similarly about five minutes. The change from n/b Bakerloo to n/b Jubilee is (from memory, I haven't been there for a while) particularly cumbersome, involving a number of passageways and a travelator. The change between n/b Jubilee and n/b Bakerloo at Baker Street is cross platform. Once again, I would be surprised if there was much of an advantage even with good connections.
Some examples of walking instead of taking the tube spring to mind. Blackfriars to Farringdon is a ten minute brisk walk but it's nine stops on the Circle Line and with the usual dwell at Aldgate would usually take twenty minutes. Then there are ridiculous examples such as Bayswater to Queensway and probably the most exasperating of all, between the two Hammersmiths, which are about 70 metres apart. Or 15 stops and two changes (unless you use the Wood Lane/White City OOS interchange which cuts it down to just eleven stops but three changes).