The problem being most people in the Avast Forum and I guess the AVG Forum haven't got experience of both products.
A long time ago when Avast Software bought out AVG, it was felt that after a reasonable period of time it would merge into one product range. This didn't happen and whilst the underlying antivirus engine, etc, are the same the User Interface is different as is the product range. There is an Avast VPN, which would essentially be the same as the AVG VPN (using the same infrastructure) but possibly a different interface.
The Avast Secure Browser (if that is what you mean by Avast Pro Browser), that product as far as I'm aware is a Secure Browser (based on chromium with extra security features) and not a full blown VPN like you are using.
There is no longer an Avast Pro (antivirus and firewall) product version, that ended many years (even before the purchase of AVG) and then became Avast Internet Security, which them Became Avast Premier and then Avast Premium. None of which had a VPN. But since the recent inclusion of The Avast One product range, only adds to the confusion.
So I guess you are likely to be even more confused now.