TBD
There are several appellate decisions captioned Commonwealth v. Robinson across different jurisdictions (e.g., Pennsylvania, Massachusetts, Kentucky, Virginia), and not all involve the felony-murder rule.
Please confirm the exact case (state and year/citation) so I can state the precise question presented in that decision.
Will supply the jurisdiction-specific felony-murder rule (statutory in Pennsylvania and Kentucky; common law in Massachusetts with SJC gloss) once the correct case is identified.
Will provide the court's holding after you confirm the specific Commonwealth v. Robinson decision.
Significance depends on the jurisdiction and doctrinal point at issue. For instance, Pennsylvania cases often address agency theory and enumerated predicates; Massachusetts cases often address merger and joint venture liability within felony murder.