He joined in October, so it's not "half Klopp". Talk about selective reasoning.
And it's not beyond the realms that we could concede 6 in the last four, really. We barely go a game without conceding. Either way, it's a marginal improvement. It's not looking better at all, not in any way significantly. And certainly not as you said "The defence under Rodgers had us in sixth place, under Klopp we were in the top four". When we finished 6th we conceded two less goals than when we finished 2nd, so the defence wasn't really anything to do with it, the goals got us 2nd place, just like this season the goals got us on the top four, the defence hasn't had anything to do with it, other than hindering us.