HMMM I have to admit I was conditioned by the old "New Holland" or T16. THe "new" RACC Chicane (T 14/15) has slowed entry to T16 by much and it's no longer the wonderful, painfully fast flowing corner it was, but I still have it set like this on my mind... Now entry to it is a bit slower, but still a very -very- fast corner.
Entry to T4 ("repsol", for old school guys
) is quite slow in comparison. Or so it was; I have to admit it makes no sense comparing a normal car (sporty as it may be) with an F1, so...
Well, unless he was referring to T6 (Wurth) but that one has hardly ever been considered as a "corner"...
Having said all that, yes, Marc is not the most relyable source of info IMHO...