That's an excellent story, Jovita, about your guardian angel.
I think that some guardian angels are better than others.
According to the teachings of the religious order Opus Sanctorum Angelorum, all angels are unique, have different amounts of power, and are all technichally each their own kind of "race" due to their individul differences in character and abilities. So, if in terms of raw power then yes, some are "better" then others.
I'm also of the opinion that how much interaction and assistance your angel gives you is dependant on your personal devotion to them and your bond with them, whether you are conscious of it or not.
My father has alwas from a young age had a great devotion to the angels, and his guardian angel especially. While I'm not going to write about the events, I will say my father has had his life clearly saved by his angel on more then one occasion.
One story I WILL mention concerns my deceased Grandpa. You see, when he was dying we couldn't get him a priest... and all the rest of the family neglected it. He hadn't been to Mass in ages and even up to his death, but towards the end he frequently said the Act of Contrition with Grandma. One day he mentioned that a black priest came to give him the last rites, but no one knows any sort of priest or such even being at the hospice... So my question is if angels can give Extreme Unction just like they seem to be able to distribute Comunion?