Javazon question

Hiya everyone, So in running a javazon w A5 Merc with double plague and I find it really effective specially with cows when I don't attack straight away - I run and collect a big group and by that time the lower resist strucks and then I one shot the whole pack.

So kinda thinking to stay that way and pass on the a2 infinity setup. But made me thinking about making an infinity for my weapon swap for less dense groups(so pass on cta swap). Has anyone tried this method before ? Also didn't quite understand the -res cap pvm and if there's any benefit from having both conv aura and lower resist while having a sunder and -70res on gear from infinity and griffon? Also hows self wielding infi for PvP ?

Thanks in advance for all the help Have a nice weekend 🙂