Actually, it is 2x. Usually
Indoraptor has 5k attack and 10k hp.
Indominus rex had 5k hp and 2k attack. Roughly 2x stats
Spinotasuchus has 4.6k hp and 2.5k attack.
Spinoraptor has 2.7k hp and 1.1k attack. Roughly 2x stats
Tapejaloceplalus has 6k hp and 1.9k attack
Tapejalosaurus has 3k hp and 900 attack. Roughly 2x stats
Dimetrocarnus has 5.5k hp and 1.9k attack
Carnoraptor has 2.5k hp and 900 attack. Roughly 2x stats
The only exception to this rule is Stegoceratops, and not really even by that much stats.
There’s really no need to be so serious about this. Not even a request for the hybrid, just an idea and thing Ludia can look at and refer to if they ever consider implementing it.