1)The gemara in sotah(daf 6a or so) says you are supposed to have an eighth of an eighth of gaava. The rambam also paskens this way. This is clearly less. Ayen point 4.
2)The gemara and poskim say that you are allowed to be honest about how much you learned, even though you are allowed to say you learned less than you did.
3)By your ‘gaava’, you are inspiring others to reach greater levels of learning which is clearly a positive thing.
4)I don’t think it counts as gaava at all, being that I have no idea who you are, and I’m not sure how much ‘gaava’ you would be able to have in such a case in terms of the metzius of human psychology.
5)You are probably thinking “boy: would this guy be surprised if he knew I actually was”