...... You're crazy.
You're all crazy.
Thunder Aphro is THE most broken dmg buffer Thunder has to offer and you're comparing her with the easily replaced Light Nike. Just for the almost 35% flat special frame dmg boost that applies to ANY dmg you deal from vigor alone, she is the one of the biggest reason
that Thunder is 2nd strongest dmg dealing element after Fire, and the most sought after unit for any Thunder players on DMM. Works in any content. Short fight, Long fights, solo quests, MVP stealing, Rag raids even Tower. And before you say vigor requires high hp to work, you know what else Thunder is good at? DEFENSE. They are the -best- when it comes to dmg mitigation even with the lack of heals. This trait has perfect synergy with Thunder Aphro's entire skill set. Strong dmg reduction, heal out any loss health, buff up, start whacking. Not having Thunder Afro isn't gonna break your Thunder team, but having her will boost your performance straight through the roof in any scenarios.
OTOH Light Nike does NOT bring any game breaking changes for Light. Light Team can already achieve the same if not better results with the new generation SSRs and AWs. Tishtrya is pretty much Light's Titania with extra utility of B frame debuff and single full heal. Mike AW enables a consistent legendary 4T burst cycle. Takeminakata is the hardest hitting Light nuker who can also do an echo burst that outright ignores enemy defense. And then there is Meta AW who I don't even wanna mention how broken she is. All these changes brought Light Team up from the slowest wet noodle to the 2nd fastest + No.1 consistent bursting element in game right now.
Light Nike's 20% x 6 assault and double FB sounds dandy and all but both takes long to charge up and if you want both, it takes even longer. It's certainly helpful in long fights, you can even argue that Svarog AW does the same thing but here's the thing, the reason why Svarog AW is OP is because she also has an outrageously strong and short CD nuke. Nike does nothing else other than stacking charms and assault buffs. All of these gain from assault buffs is perfectly interchangeable with a real attacker. In the end, the only real profit you get is a double FB. Which is, very nice indeed. Especially for GO. But nothing game breaking. Lastly, don't forget that she will be completely useless against anything that dispels you.
tldr version:
Where Thunder Aphro is good: Event grind, Raid MVP Stealing, AQ, GO, Rag and High Rag Raids, Tower
Pro: 35% flat dmg boost, Can be used with any timing with immediate result, Balanced Utilities, Strong synergy with Thunder's strength as a whole
Con: None
Where Light Nike is good: GO, AQ(?)
Pro: 120% assault boost, double FB
Con: Takes very long to start up. Completely useless against enemies that dispel.
Continue with other replies below:
Tower Rank 90th Light main here. Do I get to share my two cents then? I don't know what kind of JP players you are looking at but most of us who clear 15F with Light Team have much easier, quicker and more accessible solutions such as Freyr, Mike AW and Takeminakata. They all can/help do massive dmg and instant-stun Dysnomia out of rage and they don't need to wait that 12+ turns. 120% assault buff? Double FB? They are nice and dandy but again, by the time BOTH are ready, everyone else would be finished with the fight.
fyi, DMM general consensus from BOTH Japanese and Chinese communities: Light Nike and Thunder Aphro are like Heaven and Earth. Where does Nike belong? Hint: Not heaven. She's nice to have. Definitely not useless. But you can't ever compare her with Thunder Aphro. No, not even close. As a Light main I greatly appreciate DMM giving us plenty of sweet if not outrageously broken buffs recently but Light Nike certainly isn't one of those. Please don't misrepresent us Light players.