Hmmm, whilst some Buddhist ideas are clearly present in The Matrix Trilogy, I thinks it's pushing it to try to 'equate' Neo with the historical Buddha or the Architect with Mara etc. It's not a retelling of the Canon, rather an exploration of the nature of reality. It gives no answers.
I should also point out that saying the Wachowski Brothers 'scrambled to make two more films' doesn't sound right. There are plenty of devices in the first film that are only clarified in the other two. When Neo first meets Agent Smith, for example, he is shown in a small interrogation room on an array of monitors: the Architect's monitors.
Just for fun, remember Morpheus's last words? After the sentinels stand down he asks 'is this real?'. No, Morpheus, it's no more real than the Matrix itself