There are poor teams in any era.er, the 90s England and Pre Murali Sri Lanka sides were weak as well, doesn't mean we can discard those performances imo
In Sobers' era, it was very much a two tier system. Pak, India, and NZ were getting crushed by everyone except each other. In relation to the top bats from other teams in his era, Sobers played a huge amount vs the weak teams. I don't think this is the case with Sachin, or that his era was as weak in general.