another question it seems i can force the game to go up in technology (from what i read), is that depends on my total cr (equipment + money)?
Nope, equipment and money affects to equipment or artefacts which can be founded on unhabited planets (not sure about money, but equipment affects for sure). If you have good equipment then you can find 100% of items which were generated from start, if you have bad equipment then you will found fuel tank instead of expensive artefacts and expensive equipment (As I know).
how do u know dominators have high tech equipment? i mostly look to their armor and shield i think one with high shield and armor probably have highest tech i ask this question beacuse for me weapon of choice is vertix or if i have lots of micro modle imm9000 (seems to me withough any thing vertix have highest damage but with good equipment and lots of micro fragment do more damage)
What version of sr2 you have? Its important.
If you have not old version then cheat shift+ctrl+Vertix will show galactic tech level. There are 8 levels of galactic technology. (1-8 or A-H). first level - A, second - B .... 8th - H. When you type cheat for Vertix, game gives to you 5 Vertixes where you can see that level. Dont forget to load clear save after that =)
So these levels are important if you are playing for hight result. When galactic has 4th level (D), you can drop multi-resonator from dominator after kill. 6th (F) level allows to drop Vertix from dominator. I dont remember what level you need for dropping IMHO-9000, probably its 5th (E).
If you have first versions of game (like 1.0) then I dont know how to know galactic level except using trainer.
another question it seems i can force the game to go up in technology
Hmmm I cant say that you can directly do it. Speed of Technology's evolution depends of amout of planets. Look to amount of industrial planets, if you have many industrial planets then evolution goes faster.. As you understand, when you have more than 3 systems all types of dominators attacking systems. When its 3 or lower - only Keller attacks systems. So for 200% difficulty you cant get many industrial planets. So for greater speed of evolution your task is generate many indistrial planets from start and dont let dominators occupy systems with them. Why only industrial? Becouse equipment appears faster on that planets.
If you want know more about all that mechanism... Every planet has his own technic level (also from 1 to 8). levels of planets are rising during game, mostly its random process. But for industrial planets its higher, for agrarian lower. Summary all planet's levels make overall level (galactic technic level, as I told already). Planets with high level has better equipment in shop. You can know personal planet's level by using trainer only. theoretical its possible without trainer, but harder.
So if you decided play good, maybe some tricks will help you, if you dont know them. As i told already, its cheat-code Vertix, which shows to you galactic level. Cheat shift+ctrl+drop will show equipment of nearest ship. Very useful when you are trying to get weapon or something from dominator. You can see if that think matches to you. For example if you see good weapon in dominator and drop his equipment, you can compare galactic level and weapon's level. If weapon's level is higher than galactic level then you will never get it without cheats.
Heh its for new versions of game where you can know galactic level and equipment level easy by using cheat-codes, for old versions you can judge about equipment level only from their characteristic. And dont forget load clear save if you used cheat-code, if you wanna have fair final result.
Also if you explore all unhabited planets, maybe more easy to use trainer for it, its much faster than exploring randomly all planets. Also you can see all equipment in galactic, levels of planets... Precautionary measures are same like after using cheat-codes, you should download old clear save.
EDIT: sorry, I saw that you have 2.0 after I wrote whole post

Im too lazy to edit it after that =) By the way, do you use protect from SNK?