yep. I know it'll never happen but if the Premier league did allow Celtic and Rangers to join they'd soon realise how poor they really are. There is no way they'd be anything other than in a relegation battle.
On the other hand neither Rangers or Celtic really want to join the premier league as they'd be giving away their autumn European games as well as winning no trophies.
You're supplying a pretty simplistic argument - judging both clubs on the funding they get from the Scottish leagues. If you supplied both clubs with the PL riches then they upset the applecart massively and are nowhere near relegation.
Folk are also quick to deride the Scottish division - lets bare in mind its a population of 5m. I've seen plenty of games in the Championship this season that have been quite frankly an eyesore.
As for Johnstone - he's done well so far in his brief stint with us and long may it continue.