Over a small sample size it's impossible to say, but if you maintain those numbers after many games then yes, you are better. And there are a lot of opportunities for skill or strategy.

For example the choice of your first word matters a lot, should you plane something like ADIEU to get most of the vowels, or should you plane something like CRANE that has a lot of the popular consonants?

And then the biggest mistake I see people make is getting a lot of the letters in the right spot early and then just leaving them there on subsequent guesses. Instead you should be thinking about what types of words can be made with the letters you know about and then what types of whole new words that don't contain any of the letters that you know are correct will give you the most information about the letters you don't know... ideally your first few guesses should contain none of the same letters in order to to maximize the information you gain from each guess.