AZ Alkmaar vs Aston Villa: Tougher than Luton?

The sides Villa have faced so far have been on very good form, domestically. They’ve been well-drilled, athletic, mentally tough, and play nice football. Alkmaar, currently unbeaten in league play, have only lost once in their last 15: to Zrinjski. It’s also their sixth consecutive season of European football. And of course Alkmaar were West Ham’s semifinal opponents last year.