Is tablet PC as good as laptop computer ? Is it comparable ?

Is tablet PC comparable to laptop computer ? Should I expect similar performance ?

Tablet PCs are generally not as good as Laptop computers in the same price category. But for example, more expensive Tablet PC can be better than cheaper laptop.

Some newer Tablet PCs with Microsoft Windows or iOS are comparable with laptops by CPU performace, number of CPU cores and RAM memory, so their performance can be quite good.