What are the differences between PEGs and CFGs?

Question

From this wikipedia page:

The fundamental difference between context-free grammars and parsing expression grammars is that the PEG\'s choice operato

Answer 1

I think you're confusing CFG with LR and with ambiguity. Grammars are not deterministic/nondeterministic, though their parsers may be. An ambiguous grammar is still CFG if it complies with the definition, and a deterministic parser can be built for it doing what PEG does.