IV's Real Meaning

It all depends on you're playstyle

Personally I do power up the good iv versions of pokemon, but thats due to limited dust and candy on my end, If I had been playing since the start, I'd be more willing to power up any high level dratini/magikarp (now sitting on a mountain of about 1k candy each, and 750k dust, I dont have much need to power more up). But in general, the IV percentage is not impactive overly, a 50% gyarados is so gloce to a 100% one you never will really notice a difference, people make IV percentages out to be something like if your pokemon isnt higher 80's% or above, it preforms worse than aggron, its the over all base stats of the pokemon and moveset that make a pokemon, not individual IV's

I'd say change your playstyle if you want, but you dont have to, I have a bunch of shiny mon I dont use because not good iv's compared to what else I have, but just keep for collection purposes.

No, don’t change your strategy. It’s an underutilized value that is a formula change away from having a stronger impact. With PVP growing as a feature (they just added move effects for PVP) a perfect IV mon should have notably better performance that lower IVs. It wouldn’t be impossible for IVs to be updated as another selection criteria for team composition. Better IV mons lasting longer against their counters for example.

I am not an expert on PvP, but the way I understand it is this: IVs are already factored into the formula that calculates CP. So if you are using a Gyarados with crap IVs and CP of 2499 as opposed to a Gyarados with perfect IVs but CP is 2498, the first Gyarados (with CP of 2499) is superior because 2499>2498. Someone please correct me if I am wrong.

Regarding your statement, "10% in terms of CP" is a generality that all depends on the species. Gyarados for example has base stats of A237, D186, and S216. That makes the perfect 15 IVs 6.3%, 8%, and 6.9% of it's total stats respectively. Obviously species with lower base stats will be effected to a greater degree by perfect IVs. Again, someone please correct me on this if I'm wrong.

As a 'hardcore' player that only powers up and uses very high IV mons I can tell you the difference is negligible.

I have some alts that do raids and they only use lv30+ boosted mons of any IV. In raids they do just fine. I wouldn't shortman with them but they often out damage casual players main accounts.

Type and moveset has far more weight than Iv for gyms and raids.

As for PVP. If a mon is only 2 or 3 power ups away AND has the right move I would consider dusting it. Especially true for great league as the investment is minimum.

As the troll mentioned sometimes lesser IVs are more desired for PVP. If you have a 0% wailord and a 100% wailord their stats will be within 1 or 2 total points both being as close to 1500 as they can. The only difference is the dust cost to get them there. HOWEVER if you have a 0atk/15/15 wailord since attack most commonly has the highest impact on CP you would be able to add extra bulk to your pokemon as the defensive stats have less impact. Furthermore every battle will be a unique circumstance. Sometimes you might prefer the extra fire power than bulk. It will vary from mon to mon and their role on your team.

Honestly I would keep a level 35 wild caught low IV mon and use vs a 89% or below IV Pokemon. I would actually prefer it. I hate using stardust to power up Pokemon as it gets depleted quickly. From the Swinub CD, I evolved 6 level 35 weather boosted ones I caught prior to Mamoswine and TM’ed them to Ice moves. So without a sprinkle of Stardust, I have a A+ team ready to destroy Rayquaza when it comes back.

On the other hand, rarer Pokemon like Bagon, and even Dratini, I would prefer a 95%+ with 15 attack to power up. Magikarp is so common I wouldn’t care about IVs, so I would prefer catching a level 35 weather boosted one, and having a huge Gyarados without using stardust.