30 years is a huge time in OUR world with out technology. It is absolutely nothing is a SW universe which has had space technology for 1000's of years. You can't compare the two. Given the technology of SW and how long they have had this stuff then the technology from the Phantom Menace should be almost identical to that in TROS. That is also why it is so dumb, and insulting, to suddenly have 1000 ships all with the power of the Death Star, considering how the Death Stars were really unique one-off things that too so much time and raw materials to make.