It depends on what you mean. The three different levels of map resources take three different types of skill.
Regular map: You need balanced skill. Macro and micro come into play about equally, and you need to be skilled at managing your time and your economy.
Money map: You need macro skill. Economy isn't an issue, but time is. The person who manages their time the best gets their army the fastest, and can thus have a significant advantage over the other players. Micro skill can be helpful in having a higher kill:death unit ratio, which means your opponent has less men, which sets them back that much time.
Anti-Money map: You need micro skill. Time isn't nearly an issue compared to a well managed economy. The first person to get resources is the first one who can use them to build units, and again gives them an advantage over other players. Macro doesn't play a large role in these maps, although the first player to expand gets a foothold over their opponents.
Also, there's the issue of racial skill. Terran tends to be of average power on all three map types, while Zerg dominates with less money and is weaker with more money. Protoss tends to be the exact opposite of Zerg, being most powerful on money maps and being at a severe disadvantage on maps with scarce resources. How much those trends affect you has to do with your skill with your race, and your skill with that map type.
Yet another thing that has to be taken into account is map size. On a 64x64 map with low resources, Zerg can easily dominate early game in ZvP, while a 256x256 money map could seal the game for a Protoss player in PvZ.
When talking about skill, there are a lot of types of skills and different elements to each of them which you have to take into account. Saying "money maps take less skill" is true and yet false at the same time. It takes less of certain types of skills, and certain racial skills, but that's made up for with a necessary increase in other skills. A well balanced player should find just as much challenge in a money map as one which lacks resources.. just a different kind of challenge that depends on different skills.