That just doesn’t work when they are getting slaughtered by both sides - some say they didn’t lockdown early enough and shouldn’t be opening up, and others say they are too restrictive. And if Brexit is a disaster the international comparisons will make that very clear.
But they aren't getting slaughtered by both sides, or indeed by either side! A surprisingly high proportion of the population is going along with it, and Labour are proving pretty usless as an opposition. Yes, there has been some criticism but nobody could describe it as being 'slaughtered'.
I really don't think that international comparisons will work either - as it is, the impact of the virus is varying between countries, and they will do their best to spin the situation to claim that the virus is the cause of most of it, even if the economic impact IS a lot worse here than other countries - and the right-wing press will almost certainly be on the same page with this.