No I think you said the same thing that Acheron said: That Poland and Czechoslovakia had, on paper, an army strength comparable to Germany, and that they could have together defied Germany militarily.
To which I answered that this was not so

Your analysis of the numbers makes no account of the potential way in which those numbers could have been employed. What would have been a strategy for a Czechoslovakian military deployment against Hitler's Wehrmacht, in September 1938? How could Poland have aided them? Both countries had large armies and the Czechs had a bunch of tanks, but so did the French a year later. Neither had anything even approaching a military strategy to deal with
1) CSR being surrounded on three sides by Germany, and lacking fortifications along the former Austrian border
2) Neither country having open sea lanes or riverine lanes by which military and civilian supplies could have been imported in case of war (Poland had the Baltic but the Germans would have closed that shut, CSR had the Elbe and Danube rivers but Germany would close the one and get Hungary to close the other easily)
3) The possibility of a devastating attack by a third party while their own defense was fully engaged against the Wehrmacht - Poland had the USSR to the east who was, if anything, seen as an even worse enemy than Germany; CSR had a long border with Hungary in the south, and Hungary had a ton of grievances with the CSR including revenge fantasies about Trianon. Hungary would quite certainly have attacked them some time after the start of the war.
4) Both countries, especially CSR, having prepared their militaries almost exclusively in defense, not in deep attack, against modern armies. The Poles had some experience from the Polish-Soviet war and likely a more aggressive mindset but totally lacked preparations for mobile industrialized warfare. CSR had spent the 1920s and 1930s constructing bunkers along the German border, creating a huge fortress line that was pretty much their whole defensive strategy. And rightly so, from their point of view, since geography dictated that the Czechs had to stop German breakthroughs or else the war would be lost due to the lack of depth available for a more mobile defense.
There were good reasons why the Czechs folded in 1938. The main reason being that to go to war, alone, was hopeless. An offer of alliance from Poland, instead of land demands, would not have changed anything about that. At best, the British and French would have stood by and watched the two get slaughtered by Germany for a few weeks before offering/demanding a "meditation" that would likely have involved Poland and Czechoslovakia handing over large parts of their territory to Germany. The Czechs would have been done for after such a "mediation", just like they were after the historical Munich agreement, only worse now because the Nazis will have it in for them later. The Poles would at best have been severely weakened, Danzig would certainly be lost, the Polish army depleted, if not worse. Poland would at best limp away from such a war in a comparable state to Finland after the Winter War. At worst, the Germans would have crushed Czechoslovakia first by attacking from all sides together seht the Hungarians, then moved against Poland, unhindered by French and British hand-wringing. If the Poles are lucky then Stalin comes to their aid, and then bolshevizes eastern Poland while fighting Hitler. If the Poles are unlucky then Stalin comes to Hitler's aid, and then bolshevizes eastern Poland. It's not pretty, whichever way the dice fall.
Had there been a chance that the French and British could have summoned a forceful response to a German attack on Czechoslovakia, such as an ultimatum demanding that Germany submit their grievance to arbitration, backed by threat of war, then Poland coming to Czechoslovakia's aid would have made a lot of sense. In that situation, any escalation of the conflict, and any delay of Germany's conquest of Czechoslovakia, would increase the chance that the two western powers would enter the war and possibly defeat Germany on a prolonged struggle.
But as has been said already in this thread, the British were not about to commit to any military confrontation with Germany, and France would likewise not go at it alone. There might be attempts at bluffing from France and Britain, but unless the Germans lose their nerve, Poland and Czechoslovakia would both be defeated and partitioned.