Challenging Rules question ... also because there seem to be some things in it that don't match with Rules terminology or functionality. Read on for more details ...
Part 1: Refinements of your question
Rules: Event user has logged in won't trigger rule
This is a pretty confusing title: Rules Event "User has logged in" should always be triggered ... when a user logged in. If that's not happening, then that seems ike a Rules-bug. Therefor I think a better title is "Why is my Rules Action not executed when using Rules Event 'User has logged in'?". If you agree, please edit your title like so.
I can set any event to trigger a rule ... the rule is never triggered.
Rules Events are triggered by Rules, "you" cannot "set" them. Using custom code you may enhance Rules to trigger "custom" events to be triggered by Rules. Since this question is not about custom code, I assume you wanted to say "No matter which Rules Event I try to use ... the rule is never triggered".
... two rules triggered by the same action
Rules are NOT triggered by an action, they are trigger by a Rules Event.
Advice: Rules is all about Events, Conditions and Actions (ECA for short). You really need to think with those 3 crucial terms when using Rules ... And rephrase your question accordingly.
Part 2: Attempt to answer your question
What might explain what's happening
Have a look at issue # 430274, about an event which is a variation of your event here, and somehow explains that "after saving something" actually happens "before saving something". This is not a bug, but simply how the Rules module works.
A possible compromise to avoid these kind of issues, is to transform what's you're trying to do into a Rules component, so that your original Rule "schedules the execution" (using the Rules Scheduler sub-module) of that Rules component. For example after only a few seconds or minutes if your cron job runs frequent enough (otherwise it'll be next time cron runs). This compromise will ensure that, at the time the Rules component is executed, the entity is for sure saved (so that can't be the reason anymore then why things don't work as expected).
You clearly have a combination of rules that need some debugging. Rules is great, but sometimes also tough to debug if things don't work as you'd expect. There are some typical facilities to do such debugging, but my Keep-It-Super-Simple technique I often use is my BINGO-trick. A sample of such rule can be found in my answer to "Which Rules condition can be used to email a user when an admin updates their profile?". Obviously, if you have more then 1 rule (like 3?), you may want to make it like Bingo1, Bingo2, Bingo3. Depending on the order they are shown, you also know the order of execution. Stupid, but simple and efficient (I think).
For more suggestions about Rules debugging, refer to "How can I display the value of a variable inside a condition?"
Use Conditional Rules
In your case there are 2 rules involved that are triggered by the same Rules Event (= after user acount is updated). But how do you know in which "order" (which Rule gets executed first)? There might be some logic in rules somewhere to find the answer to that question.
But instead of searching for that answer (or hope the order matches with what you'd hope), I simply use the Conditional Rules module in such cases. Not only does it allow me to merge multiple rules together in a single rule (= much easier to maintain, etc), but "I" am in full control about the actual Rules Conditions (within a Rules Action!), and I can set the order of them in the way "I" want/expect them to be. You can use Conditional (if/else) logic within the Rules Action, or you can also use Switch logic.
For an example using the Conditional Rules module (for which there is not a lot of docu available), refer to my answer to the question "How to prevent a node being saved when using the Rules module?".
Be aware: this module only has a beta release for D7, though it's used in over 8K sites (which makes it seem like a pretty robust module though).
If you're not familiar with Rules, checkout the video tutorials Learn the Rules framework.