dunno, stevious. Different levels of the same thing.
If you come back from a standard loop in the woods and you find you pegged a top 10 time on a section where you weren’t really trying, you’d be tempted, next time you were out, to have a go at getting the best time possible on that bit. Bit different on a mtb, as there’s a different level of genuine fun and enjoyment from pinning it on a DH, getting everything right, or cleaning a technical climb that you haven’t before. That comes before you get the “results”.
Maybe it’s similar on a road bike, uphill and down, measuring your effort. I dunno. There’s always satisfaction in knowing you did something the best. Doesn’t matter if it’s the best you’ve done, or the best anyone (on Strava) has done, but the closer you are to the latter, top 5, top 3, the more likely it is that the two could be the same.