Hulk 1
"Loebforce" Hulk+full knowledge and access to the speed force
VS
Hulk 2
"Professor" Hulk+time gem, mind gem and space gem
Both have one year to get used to their new powers.
Hulk 1 has every issue of the Flash/West or Allen, not both as source materials.
Hulk 2 has the knowledge he gained about the gems during the Infinity Trilogy.
Fight takes place on an uninhabited/indestructible planet.
Hulk 1 speed blitz hulk 2 into a mushy grey paste
The drains the gems with the LF
The hurls said half reformed mushy paste at the nearest star at light speeds....(If bfr is on if not the first 2 actions work anyway)
With a year Banner's knowledge and a year of training, Hulk2 should be proficient enough with the gems to either revert Hulk1 back into Banner with the mind gem, amp himself to an insanely high level, way beyond World Breaker, also with the mind gem, or freeze time outright with the time gem. Not sauing they would work 100%, but it woild make things interesting.
He doesn't have to, just has to prep so that he has time slowed down in front of him... like Banner did with some tech during FoTH (or was it WWHs?).
As long as he's given prep with the gems, he should arrive at the fight in a state sufficient to neutralise the speedforce's primary (and any other, most likely) offensive threat.
He gets used to being 2 seconds out of phase with 616 time .
Or he starts off as an astral being (Hulk would tag him, but not instantly, as he'd have to adjust himself, which would give him all the time he needs to ... stop time).