Absolutely...
So, the Helio X10 might have 10 bloody cores, but it can't hold a candle against Samsung's latest Exynos 7420 in single core benchmark test! Actually, it roughly half as powerful compared to Sammy's 7420 in performing tasks which are performed on just one of its ten cores:

But combine all 10 cores; and the result is quite surprising:

But then again, not all apps are optimized to function on 10 Cores... It'll benefit a tad in multi-tasking and that's about it...
Processors are just like how ENGINES work in MOTORCYCLES!
More cylinders (or cores in case of processors) may give you more horsepower (or... Well... Er... Computing Horsepower in case of processors LOLz) but it'll greatly diminish your low end torque...
Good Day!