Maybe he thinks that Imran would average 26/27 at home without bottlecaps.
Not just the bottle caps, the umpires as well.
If during your bowling career you average 17 at home and 25 away (including SL of course), while you saw the need to introduce neutral umpires to "legitimize results", what do you think?
Have you ever read contemporary articles from the '82 series and those subsequent?
Miandad never got a lbw or close caught behind decision against him for a decade. Do we believe it only applies to him?
None of the other great bowlers form the era had the staggering home / away difference that he had. Well Waqar, but....
Now there are bowlers with differing numbers home and away.
Steyn, Murali, Ash etc.
But we know why. Steyn was in the flat era and had the most helpful conditions at home. Murali and Ash were bowlers with custom made home conditions as well.
But that isn't the case here, in fact Subz constantly tells us that Pakistan was one of the hardest places to succeed, well at least for travelling bowlers.
And there's also the pushed perception that none of this was real. It was just as bad everywhere. That's not nearly the case, and everyone back then knew what was going on. The joke was that Miandad couldn't be given out LBW in Pakistan, and don't let Imran hir you on the pads. Hard to do with it's reversing sideways after the ball had been prepared.
It's one thing to defend him, it's another to pretend that his home record was unquestionably clean. The gap existed for a reason.