Time to start tailoring the way your play differently perhaps if you keep getting wrecked. Until dedicated servers come up, there's always gonna be a situation where if the guy you're going against is the host or isn't getting lag comped as bad as you, you're gonna be at a huge disadvantage. Especially if you're a rusher.
See the perks/weapons people use. It shows what they're running in the killcams. See what they use (most play the same), and then setup a class to counter. For example, hardly anyone spends the 3 points to have the Incog perk on (new version of cold blooded) since Oracles don't work all that well, they're not worried if the show up through walls for a second or two. Buuuuuut, it also protects them glowing in someone's tracker sight. The tracker is essentially the new version of the BO2 target finder. It totally blurs your peripheral vision, no radar when scoped in, no zoom to it, and the reticle sucks....so it's not an overpowered attachment. But damn does it work well. Especially since the map colors suck so enemies blend right in to the maps sometimes. I put one on the M14 and it's great. Mid to long range...see some faint glow of a head glitcher? Bam bam, they dead. I run it with quickdraw, stalker, and incog (snipers do use thermals so this counters it). I usually win against snipers even though I have no zoom. Plus use can flip the tracker sight down and just run iron sights for the up close and personal stuff when you need the peripheral vision. Try it out. But it is absolutely not a rush class so don't be charging all hung go with it.