Absolutely disagree with that. Numbers may be the most objective measures available for rating players but they're fairly insensitive as measures go. There are other indicators to decide how to rate bowlers, especially when they're so close in terms of records.
I actually think we're closer in our opinion than you think. I agree, when it is that close, then it gets to other considerations. My replies have been more in rebuttal to that Donald was "a group or two behind" or "Donald was one of the best of his time and McGrath was one of the best of all time." or "Not even in the same bracket." as Goughy has said.
For me, that argument doesn't make sense and whatever else Goughy is seeing in them as bowlers, they are still not that different and their actual figures speak loudly in proving that.
Forget, for a moment, who moved the ball more. I can't speak for Goughy but for me, the amount of swing/cut/seam a bowler gets is just one consideration in rating McGrath above Donald. For me, it's also about how they used the conditions they had available, how they reacted to being hit around, who they got out and how they did it, how they targeted them, their tactics against players, at what point in a game they took their wickets, etc. Intangibles.
But, as we've seen, in terms of overall record, their success on different pitches, against different countries, etc, is similar, if not in Donald's favour. So I still fail to see how you can split them even in terms of "how they used their conditions, etc". These
are reflected in their numbers.
One example; McGrath and Donald were both brilliant front-runners but I think McGrath was better at pulling back when the batters were on top whereas my perception was that Donald was more likely to drop his bundle, even a little. I also felt that McGrath was better at targeting players' weaknesses and not letting up and had a better plan B if things weren't going well for the team. Now, no amount of poring over their records or scorecard reading is going to be instructive to that level but it's reasons like that why I rate McGrath a touch higher as an all-round quickie.
That's key though. Neither in average nor in ER does Donald really suffer for his approach, yet he is greatly benefited by going for the throat. Lillee is often mention like that; he simply never gave up and never gave an inch. In his time, that's something he was revered for. Maybe that's a subjective difference, or a preference. Yet I try to argue: that's fine if you see it that way, but objectively speaking, they were pretty much level. For me, Donald was no less dominant and no more dominated than McGrath was.