There is no such thing as a "JAA compiant PPL". A PPL is either a JAA one or it isn't.
I would imagine that, if you pushed them, they'd tell you that it is "compliant" only in as much as it can be converted to a JAA PPL. But that's true of just about any PPL which you can get anywhere in the world.
If you want to get an FAA CPL/IR then there's no harm in getting an FAA PPL to start with, that's correct. Personally, though, I wouldn't want to use a school which published misleading information - who knows what other areas they are going to mislead you in? There are hundreds, if not thousands, of good, honest schools in the US which can train you for an FAA PPL if that's what you want to do (although admitedly only a small number of those can issue you with the Visa which you need to be able to train in the US legally).
FFF
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