I am confused by the BA website on baggage allowance.

"How large can my bag be?
The maximum dimensions of the bag are:

90cm x 75cm x 43cm (35.5in x 29.5in x 16 in), including the handle, pockets and wheels.

What to do with larger/bulky items
You may take bags up to the dimensions 190cm x 75cm x 65cm (75in x 29.5in x 25.5in), including the handle, pockets and wheels."

So which is it? 90x75x43 or 190x75x65? Our Flyertalk BA baggage sticky says 190x75x65 but then I dont understand the BA website.

If it matters, I am flying First and want to check a long ish box which is about 150cm in length. Would be checking 1 or 2 other (normal) bags as well.

Thanks!