And has very little comparative effect on votes. The big number as already covered is the 44% that 25% of market share.
Again I disagree - there would have been loads more seats that would have remained tory, even with a a drop to 25% of the vote if Labour/LibDem opposition had been split on a more uniform swing basis allowing the tories to just hold on.
It really is very, very hard to argue that there wasn't incredibly efficient targeting on the basis of Labour getting 412 seat (up 211) on just 33% of the vote, and the LibDems getting 71 seats on a vote share barely different to 2019.
Effectively Labour and the LibDems didn't go against each other in trying to oust the tories in individual seats - it was a case of 'after you' in some seats and 'no after you' in others.
Just think about the campaign - I can hardly think of a single point in which Labour attacked the LibDems or vice versa.