All of this is true, but it's not the point.
Forest's best season in 30 years is happening now. Leicester's best season ever happened nearly a decade ago.
Saying "your success now is not as good as ours was then" is like when your dad tells you nights out aren't what they used to be when he's settling in for a Friday night on the sofa and you're out on the pull. Yeah, whatever, Dad.
Also, no-one outside Lancashire cares that Blackburn won the Premier League once. Leicester's win will become a pub quiz question as the years plod on.