I really can't be asked to read the whole thread, but my 2 cents.
Low budget games are compared with larger budget ones simply as they are competing for the same market, it's nothing like comparing a Fiesta with a Porsche.
Example of corse would be to compare the likes of the History channels Battle for the Pacific with CoD World at war. One low budget and one high budget. They are both however going for exactly the same market, but you still have to say that Battle for the Pacific was a terrible game as the production values wern't there.
There are low budget games that are good though but the budget shouldn't be taken into account when reviewing a game, it's all about gameplay, re-play value, graphics and sound.
When games are released the lower budget games are nearly always the same price to pay for the end user so why should they be given more leeway?
My second point however is the simple fact that every body is different and if there's a game that's released that suits you but may not suit everybody you shouldn't take it as a personal insult that the game you like so much got a bad score. What you must instead to is concentrate of the text of the reviews to find out if YOU will like that game and not worry about the reviewers personal opinion as they will have there own tastes on the games the like.