I am not saying that as an excuse because when some one has played 200 tests you expect such mammoth series from the batsman. All I am saying is that when pitted against Smith,Lara Kohli etc ,Sachin's this fact of ' short series where he averaged mammoth' too need to be taken into account when providing marks to this particular factor.This because he could have a few mammoth series indeed if those series were long enough. That's all.
Again Bruce Reid, .F.Devilliers,B.Schultz, S.Clark, R.Harris, S.Bond, M.Asif too averaged <25 .Sachin faced them.I would add Warne too as an exception because he was averaging <25 even after first 657 wkts of his.
Again I already briefed about the 3 Indian bowlers & Abbas you quoted w.r.t Smith.No doubt if nothing surprising happens all these 3 Indian bowlers will be averaging beyond 25 by the time they are done. M.Asif too can be added to this list that makes Smith's count 4. Means still 21:4 in favour of Sachin. Again Sachin faced lots of 25-30 averaging bowlers like Fraser, D.Fleming, Akhthar, Anderson,Broad, Ntini, Mcdermott, Nash ,Gilliespie, C.Matthews M.Hughes, Gough, Caddik, Vaas etc etc too. In the last para of your's you made nation wise comparison. But , by quoting these 25-30 averaging bowlers, I made bowler-bowler comparison that shows the superior bowling quality in general that Sachin faced.
Again, I am not saying Smith can't be comparable to Sachin , but at this stage of his career(only 7540 runs) .... no way.I can't put him above Sachin. Let him finish his career.