Not these days. Moyes, despite being very adept in the transfer market was only allowed to bring in two speculative loan signings and was forced to sell Arteta et al and got none of the money. Only after selling two strikers, the creative midfielder at the club another squad player and ANOTHER striker was he able to spend a few mill on Jelavic. And what do you know! Another belter of a signing. Donovan, great signing, Gibson - 250k up front and is now nailed in our first XI and Pienaar. Brilliant business. I don't want to sound like I'm kissing ass here but he's like a bloody contortionist: We were on our knees in january, backed right into a corner and those four signings are pretty much solely the reason we've turned it around and now were are 7th and played in a semi final.
You mentioned what Martinez best business with £5m was, well this is just one of many of Moyes'.
I meant with regard to the quality of his signings. With more money for scouts, a club with a better reputation etc. you are more likely to sign better players.
At the end of the day Martinez has dealt with a net transfer spend of -£9m over his tenure and has kept the club in the premier league with a squad many wrote off last season and this season. He's done that while playing good football.
I'm not going to say Martinez would be better overall over a ten year period than Moyes, but anybody saying that he would definitely be worse are nuts.