I think it depends on what you are looking for and your level of experience. If you are new or newer to gear, sure, I think you can do very well, if you have a solid work ethic, good experience in the gym and know how to eat to grow. To an extent, gains are going to be dependent on your diet. I'm going to get off track here, for just a minute. For a lot of guys, it's hard to eat enough food to make consistent gains through a cycle, myself included. EQ is considered my many to be a "milder" drug than deca, when it comes to adding mass in the off season. But EQ allows me to eat so much more than I would normally be able to, that my gains are better on EQ than deca. So sure, EQ may be milder, but if I can eat more, I'm going to do better.
If you can get the diet right, you can do a lot with only a little. You may make better gains than the next guy, who is running harder compounds, if he doesn't know how to eat. Your potential for muscle gain on Primo and Var isn't going to be as high as on Test/Deca/Dbol, but you can do good for yourself, if you make the most of it. For a new user that wanted to go this route, I would suggest 500mg primo for 12 wks, and 40-50mg anavar for the first 8 wks. You will want to do a PCT post cycle, about 2 wks after your last shot.