I have a HSBC AMEX and have never seen the CFC comment pop up on my reports here or in other sites. Maybe call the CRA's and ask them directly? Maybe FICO took a dump and needs to get flushed or something? Just keep using and paying your cards to show activity and your score will break the barrier. I wouldn't worry about it. I've been stuck between 700-720 on EQ for ages now and 700-729 on TU. Maybe take out a new installment loan for a large purchase to balance your account mix?
How do you get an HSBC AMEX?
I believe that is an invitation only card.
I applied for it on their site. It had the lowest top end APR (15.x% vs 19.x%) of all their offerings at the time and they no longer offer it. It's now serviced through Direct Merchants Bank.