I'm not making any point at all about Starmer's legitimacy based on weight of vote.
The point I was making is simply that pulling fewer votes than Corbyn from a larger electorate would be a bit underwhelming, and a bit of an embarrassment given how desperate Starmer has been to distance himself from his predecessor.
Spin it however you like, explain it however you like, it doesn't matter. The simple fact is, that in that scenario (should it happen) fewer people bothered their arse to vote for Starmer than Corbyn.
Hardly rock n roll.