Tiësto the new Mozart?

"DJ Tiësto is a present-day composer of the likes of Mozart or Van Beethoven", I read recently. First question that comes to my mind is: "Is Tiësto a composer?"
Tiësto does make his own tapes with compilations and arrangements of digital soundbytesand sells these successfully. Thinking about what a composer is and does, i.e. the definition of "composer", one can argue indeed that composing or putting together pieces of music makes one a composer. The music may be short or long pieces, written on sheets of music or arranged on a computer, having in mind violins, tubae and horn or synthesizers, mixing tables and digital effects. Although it's clear that there are hundreds of years of difference between how and what is being composed for the human ear (and with what means and with what in mind), it appears that composing pieces of sound (or noise to some) makes one a composer, be it with modern or old instruments.
Second question that pops up: "Is Tiësto a composer of the stature of the greatest classical composers?". It is true that Tiësto is indeed very successful and plays for thousands of listereners and party-goers in the biggest and most famous clubs in places like Ibiza, to where he flies he flies in a private jet. Taking that back a good 200 years or so, it is not unlike Mozart travelling around Europe in luxurious fashion of the time, and drawing big crowds of people who wanted to hear his music and see his spectacular operas. (As to the type of crowds: I'm not sure wheter there would be a difference e.g. upper, middle or lower class.)
Further, Tiësto mixes his digitized samples also on the fly during live performance, which makes him in addition to a composer also a performer (and improviser) of music. Compared to again Mozart: das Wunderkind von Salzburg used to get to the courts and theatres where he was asked to perform his pieces or direct his operas, and the audience was delighted and treated him with applause and other customary forms of honour of the time.
These are 3 parallels between Tiësto and Mozart. But the most important one cannot be drawn today. For the proof of the pudding is in the eating. That is to say, we (or our descendants) will have to wait and see whether DJ Tiësto will prove to be a composer of evergreen and immortal music like Mozart or Van Beethoven (or John Lennon or Leonard Cohen) were. Or whether he will be forgotten in, say, another good 200 years from now.
(photo: animaatjes.nl)