system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Bifrost vs Tesseract

Now the way I understand the canon:
Tesseract = Space gem, which means it can teleport you anywhere.  Need to be somewhat sufficiently powerful before you can wield, handle its power (as with all the infinity gem/stones).
Bifrost = Asgardian technology, which can be rebuilt upon destruction, can also teleport you anywhere.

Which is better and why. And if the bifrost is of equal power to Tesseract.....does that mean with sufficient genius and technology one can recreate the effects of any infinity stone/gem?
gpt
Bifrost can only teleport you from one of the 9 worlds to Asgard and back.

The Space Gem can teleport you from any place to any other place, including different galaxies and different univereses, dimensions, etc. We are talking about an infinite amount of planets and places here. And it is easily transportable, a hand held device, controlled by your thoughts. You can keep it in your pocket or mount it on your gauntlet and take it anywhere.

Biforst is a gigantic device that is stationary and controlled by a sword.

Another difference is that the teleportation with the space gem is instant. Travelling with the space gem is as easy< as going through a door. You just end up somewhere else. The bifrost takes time to load (everything must align frst) and then some additional time for the transport itself. in addition, the resulting beam stays for a couple of seconds before vanishing. 

So, yes, the space gem is far superior in every way.