The comparisons to Era PC do no service to the thread.
From the start of iEra, guns have been different from Era PC.
Stefan had set the stats of the original guns (uzi, shotgun, handgun, ak47) and did not want those stats to be altered. These original guns were more powerful than their Era PC counterparts. In other words, Stefan had set the statistical starting point for guns at an irrevocably raised bar. Any future guns would have to be based around this statistical premise and be at least equal by comparison, otherwise there would be no incentive for players to purchase them.
Wil's "tier system" is not possible because it involves altering ALL guns. Stefan has strictly enforced that the "tier 1" (to use your terminology) category can not be altered.
If applied, the tier system would only narrow the gap of diversity among guns, which would eventually prompt a retrospective decision to increase the "top tier" stats again due to the lack of diversity. The idea of gun diversity is discussed at length
here.
The walk speed is also slower, so essentially there are faster firing guns and a slower walk speed.
Given these facts, the PK style for iEra is clearly different from Era PC.
There is far less emphasis on weaving through bullets; rather, the objective is to coax or trick the opponent into walking into a trail of bullets and putting them into an undodgeable (due to the slower walk speed) flurry of combo hits.
The solutions that may work on Era PC may not work on Era iPhone.
The only thing in common with Era PC is the shared idea of balance: making sure the weapon stats don't compromise the fairness of the game.
Eventually, a threshold is met where one gun is released that players complain that a gun is too powerful, invoking a recall of some sort.
Solely based on your posts, MiniOne (because I haven't been on iEra in some time), I would say that the threshold is either met or on the verge of being met.
I know that Cloyd and I share very similar views on guns, and I doubt that he would let anything compromise fair PKing.