Yes, slot machines are more reliable than electronic voting machines, because an electronic voting machine is easily programmable for fraud. It only takes one person with basic computer programming skills in order to reprogramming an electronic voting machine in a way that will cause fraud. There are too many ways to mess with voting procedures. Slot machines are better.
Slot machines are not more reliable than electronic voting machines. Think about it, both use a lot of the same technology, both have information that is important to keep protected, and both are subject to hacking attempts. So slot machines are not more reliable than electronic voting machines, they are equal.