Who rank up? Cull Obsidian OR Hyperion (Both Unawakened)

Řïdđhįm

This question is to those who know how to play with Hyperion and Cull.
I am currently on 5.2.4 [stuck on the masochism node (might get the spelling wrong)] and pulled 3 5*cosmic champions in last 2 weeks which include Corvus, Cull and Hyperion. Took Corvus to Rank 3 and Cull and Hyperion to Rank 2. I don't want too many cosmic champions in my team. So who should I rank up Hyperion OR Cull Obsidian which will help me in Act 5 and 6.

Thanks in Advance

Sarvanga1_

Hyperion. Beast of a champ and his power gain helps a lot in many scenarios.

Prakhar_82

Hyperion no brainer

Darkhero_25

Hyperion

JueVioleGrace

Hyperion. Immediately.

Hilbert_unbeatable2

HYPE
Don't think much

Unknown

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Osfan8

Not to sound redundant to previous responses but it’s not even close, Hyperion is significantly better and 5* AGs are more available all the time.

FluffyPigMonster

Hyperion and don’t look back

Gardener

Hype is a beast of a cosmic champ its a shame Kabam hasn't released him as a 6* yet