ddt
Mafia Penguin
It's not the fortifications.
It's the air power.
The Czechs best fighter was a biplane. It was the best biplane ever produced, but it was still a biplane.
The fortifications also weren't as tough as Maginot. There's a map here. Only the red bits were Maginot equivalents (some better). The green were essentially pillboxes at best. Also note the incomplete bits. Yes, the big bunkers were impressive...as the site I linked to says, they were used as practice for Eben Emael. They weren't everywhere.
I've been digging around for the Chiefs of Staff report, but the National Archives aren't cooperating. Found the end of '37 defence expenditure plans, which covers the RAF and how badly outgunned it was compared to the Luftwaffe, and would be up to probably 1941, even with the planned big expansion. CP316(37) "DEFENCE EXPENDITURE IN FUTURE YEARS", if you're at all interested.
To what extent would superior German airpower have been decisive? And in what form, tactical on the battlefield or strategic as in bombing Prague to smithereens?
I found this interesting term paper from a student at Duke University. Haven't read it all, yet, but it concludes that CS, France and the UK would have likely had the upper hand, provided the French would march into Germany and Germany thus would have to pull troops from the CS front to defend against France - they had only 9 divisions on the Westwall compared to 56 French divisions.
And that doesn't take into account that the Soviet Union would have sided with CS, or what other Central-European countries may have done.