Yes, and that's why its not a like-for-like
But to pretend like there is absolutely no data from which to make some preliminary judgment on how each player may uniquely impact this new team, is absolutely ridiculous..
Johns, Bedsy and more have said they believe Lamb is the best fit at 6. They could well be wrong. That's not the point. The point is that they're making their judgements on good information. Information which you seem to be suggesting does not exist
That being said. I reckon Brown is best positioned to know who's best for the 5/8th role, and so far he's picked Watson.. So lets see how things go
Watson could absolutely kill it if things go right