Well it's safe to say that Swann is not doing himself any favours in the comparison at present: 10/590 in his 5 Tests this summer. So that even when he goes past Laker it won't be one of those "good" moments because his recent form will be tainting it a bit.
And I still don't rate Swann really. Against the 3 strongest teams of recent years (Aus, SA & Ind) he averages 39.68 vs 23.12 against everyone else. He's got to do better than that to be a great.
Well that's the thing i know his numbers don't look fantastic this home summer, but at the same time i haven't noticed any real signs of decline at all.
In general this summer he hasn't really gotten much turning tracks. The windies came in early season when the ball was swinging and the fast bowlers did the job - he just had to be a stock bowler holding up and end - so that's not much of an issue.
When SA came in the oval test like the entire England attack, they were pasted by Smith/Amla. He was dropped crazily for the headingley test on pitch were Pietersen with his part time off-breaks to 3 wickets in the second innings. At Lord's i thought he was quite dangerous, but was a bit unlucky.
However had a very good series in South Africa 2009/10, where he was head and shoulders, England's best bowler.
Same thing happened vs India and Australa in recent tours.
The England quicks owned AUS and IND batting line-ups on seaming decks and the
only two times when Swann got turning tracks in Adelaide and at the Oval - he spun England to victories. Which is all that can be asked of Swann really.
When he gets favourable conditions and has to be the main wicket-taking threat as he showed in Sri Lanka in March, he steps up.
If Swann were to struggle in India this winter, where he will have helpful pitches in all 4 tests, only then can we say his form is an issue.