I'm not saying stone edge misses aren't game changing. They can be. What I am saying is that no one will intentionally switch a bug type into stone edge EXPeCTING stone edge to miss. Going back to that terrakion example, you switched in cap 4 expecting a stone edge. That chance of a stone edge miss would have had a negligible impact on your decision. Its nice that stone edge miss, but you were hardly counting on it. Think about it like parahad: its nice when it kicks in, but you dont make a decision expecting it to save your ass. The exception would be when Terrakion is sweeping your team. At that point, you may be relying on a stone edge miss to survive. In that case, yes, no guard impacts your strategy and is a risk. In every other case, its not.
Did You Stand Too Close To The Fire?