Adapting London / NY with Asia experience

Hi guys, I was fortunate enough to receive an offer at an MM in London / NY as an associate.

Coming from Asia IBD background, I am afraid I won't be able to deliver / work up to the standard as an associate and even my juniors could do better than me.

My experience in Asia has largely been doing very simple and straightforward ECM transactions and only seriously involved in 1 buyside process in last 4 years. Our modeling is usually based on client operating model and connecting it with Q&D templates similar to the simple versions (2-3 hour case study) of BIWS.

It just seems scary that juniors in London / NY I worked with have very good modeling skills and more importantly experiences in local markets / execution knowledge (ECM here is mostly non-transferrable and seems most of you guys have way better M&A execution experience like public takeover and even some sophisticated pitches could evaluate 3-4 strategic options that are simple to read but difficult to draft on a slide).

Should I be worried? It just feels I am more qualified as an analyst than an associate. Is it often similar to how mba associates join and adapt? The team I joined doesn't recruit mba and it is very lean. So I guess I may potentially need to be the sole junior on some of the deals and I just hope I don't rock the boat..