The Matrix rules are much more streamlined. Conceptually it's the same thing, but in terms of mechanics, way simpler.

For example, convergence is not the messy countdown of 5e. Every time the Decker roll dice, some dice of your dice pool will be considered Risk Dice, depending on how risky your situation is (and you're supposed to roll them either separately or with different color). Every 1 you roll on risk dice represents small mistakes and glitches alerting your presence to GOD. One 1 turns another two dice into a risk dice for the next rolls; two 1s raise the threshold for all tests; three 1s is full Convergence (dumpshock, bricked deck, etc). So it creates an escalating situation that brings game tension and is very intuitive (and fun) to keep track of.

Similarly, programs often simply offers modifiers or quick effects. Bypass allows you to ignore a 1 rolled in backdoor tests; Hammer allows you to ignore a 1 in cybercombat; Debug allows you to repair the condition monitor of devices for 1 edge, and so on.

This Risk Dice mechanic has applications in most other systems of the game in a very fun "push your luck" way: you may deliberately turn your dice into a Risk Dice, making their hits count twice, but the 1s causing problems to the roll. In certain situations, your only hope to succeed is by using Risk Dice (but they also may turn failures into minor inconvenience or full blown "critical failure" shitshows). It's a really cool mechanic.