From your links, it looks as though Chavez is performing very poorly indeed.
Notice that Venezuela's improvement in HDI over the measured timespan is much lower than any other on the graph. In 1975, Venezuela was actually slightly better off than Latin America and the Caribbean as a whole. Venezuelan growth in HDI then essentially parallels the regional figures from the mid 80s through 1992.
Then, Venezuela begins to lag behind the other nations in the region in their HDI score.
Notice that there is no change in the slope of the curve between Chavez's election in 1999 and the end of the graph in 2005.
It seems that Chavez hasn't really accomplished much at all, and under his leadership the gap between the HDI in Venezuela and the HDI in the rest of the region is widening.
Hmmmm.
Matt