Right, we now know it will run. Problem is fuel is not getting through the carbs. The Easy Start allowed it to fire up, but with no fuel getting through it can't rev cleanly or pull away.
You'll need to move the spring clamp further up towards the end of the pipe, or get a jubilee clip onto that pipe so no fuel is leaking. But before doing so take the pipe off the carb, fold it over and clamp it shut. Now start cranking the bike over whilst spraying your carb cleaner into the petrol intake (hence the reason you clamped your petrol pipe.) This will pull the cleaner through the carb and hopefully clear any debris that has blocked any airways or jets
So if that doesn't work, you need to think when fitting the throttle cable did you interfere with the carb at all. Looking at the pic, it seems the throttle cable fits into the throttle housing on the end of the carb, so there should have been no reason to touch the carb.