Normally a KIT is nothing more than a published pattern coupled with the amount of fabric given for that pattern.
If is the Kit is easy, it means that is a great pattern.
You failed to say what the name of the kit/patterns was.
No, not all kits are easy. It all depends on the pattern used.
Not all kits are created equal. Some shops make up their own shop kits. Using generic patterns and whatever leftover non-selling fabric they can find to put in it.
One should never judge ALL kits equally. That would be like saying ALL patterns are terrible just because you tried one your skill level was not ready for!
Honestly, know what is in the kit prior to purchasing it!
Know your skill level before biting off more than you can sew!