Hello DaviR,
Theoretically, you are right.
However, V7 is perceived on the internet as the best version ever of Avast! A pure antivirus, no spam, no advertising ,no push to buy other products, individual shields ...
Except Behavior shield which may have improved, the other shields are exclusively based on definitions, so as long as AVAST will release definition for this version, I see it as a perfectly viable option for somebody looking for a pure antivirus, no bells and whistles ...