Though in all seriousness, I can't see the "Biden/Harris are to the US what Corbyn/McDonnell were to the UK" analogy at all.
Both have flaws, sure.
But on the one hand you have a narcissistic liar in the pocket of Putin, who is probably the only leader of a democratic nation to be handling Covid even worse than our government. On the other hand you have what, to me, look like a couple of mainstream democrats, albeit ones who have bought the TWAW schtick.
But if I were an American woman I would be thinking "my GC beliefs versus... contraception no longer provided by my company health scheme, roll-back of Roe v Wade as soon as RBG pops her clogs, economy so seriously tanked I'm probably going to lose my job..." I'd hold my nose and vote Democrat, while praying that I never needed a women-only homeless shelter and never ended up on a locked psych ward. Because the sheer number of women Republican policies will damage in a very direct and immediate way is greater than the number likely to be damaged by the Democrats.
From this side of the pond, I'm just praying we get rid of him because I think Biden is less likely to press the big red button after getting into a twitter flame war with someone (or simply because he mistook it for a coaster and put his cofeve cup on it).