And what if Thomas beats Pogi on this Giro edition, are then Pogi and Jonas behind Thomas? Point being this is just so selective memory, like if Rogla didn't beat them all already in the past.
Roglic is just better than Pogacar and Vingegaard in 2 areas that are not that important to win a Grand Tour.
1-sprint
2-short TT
Grand Tours are decided in the mountains stages, especially those long mountain stages with a lot of vertical meters and in the long Time Trials.
1-Pogacar and Vingegaard are a better bike handlers than Roglic. They crash less, they can position better in the peloton to get out of trouble, they also can descend better.
2-They are also better than Roglic in Time trials, especially in the last week of a Grand Tour.
3-Mountain stages and the ability to push high W/kg ( yes, this is very important, for some reason the riders and staff of the teams talk a lot about that).
Vingegaard and Pogacar can push more W/kg than Roglic, if we look at the performances in the last years. They can push more W/Kg in 15/20/30/40 min climbing efforts.
4-Roglic also has a big weakness especially compared with Vingegaard, the long mountain stages with a lot of vertical meters. Roglic suffers a lot on that type of stages.
5-Pogacar and Vingegaard recover better from the efforts on the previous days.
The gap between Pogacar and Vingegaard to the other riders in the mountain stages, tells everything. I just can't see Roglic being phisically to go with them. He never proved capable of doing that, day and day out, and for some reason Visma choosed Vingegaard to be the guy in the Tour.
I just can't see how Roglic can beat Vingegaard or Pogacar in a mano a mano, on normal conditions, but like i said, there's a chance of Vingegaard and Roglic not being there at 100%, so the chances of Roglic increase a bit.