My rating at blitz is under-rated as my OTB rating is 1700+, but I am an old man and my brain is too slow for blitz games. However, if a 2000+ underestimate my game they will get into trouble.
I have been defeating 2000+ players from time to time. But this is the first time I have a clean game ending up with a checkmate. So it is worth showing-off :-)