MacBook Pro 2014 (and other years as well) use pentalobe P5, not phillips, for the case screws.
But, correct tools are listed with some of the take-a-part steps. iFixit.com is pretty thorough about providing a selection of tools that will work, such as here.
The difference is the blade of the screwdriver.
This article shows the different types of screwdriver tips/blades.
If you can get a pentalobe P5 at a dollar tree for a dollar, and it is really a pentalobe, then get it!