as we know there only 2 types of sentrys in tf2 and each have there pros and cons
i say this sentry can has a third meter that will shoot a emp which disables a spys cloak meter for 5 seconds BUT the sentry is on cool down for 8 this is only avalibal at lvl 3

also it has a much further range BUT the ferther away the target the less damage delt so it can kill snipers but it will take time also if the sentrys kills a spy before cool down its cool down time is reduced by 3 seconds