Compare Two Competing Tabletop RPG Systems for a New Group

Two systems, both recommended by different people, and no way to know which is right without trying both or asking someone who has run groups into the ground on the wrong choice. This compares them on the dimensions that matter when nobody at the table has ever rolled dice in anger.

I am setting up a tabletop RPG group with people who have never played before and I need to choose between {SYSTEM_A} and {SYSTEM_B} as the starting system.

Compare the two systems across:
1. Learning curve for new players: how long before the group can run a session with confidence
2. Game master complexity: how much prep does the GM need to run a satisfying first session
3. Genre fit: which types of story each system handles best and worst
4. Cost of entry: what the group needs to buy or access to start
5. Community and support: availability of free resources, active forums, and one-shot adventures suitable for beginners

End with a direct recommendation for this specific situation (new group, first campaign) with a one-sentence rationale.