Before the war sweden was weak but by the end they had made large gains. 800 tanks in 1945 compared to 13 and 1,000,000 foot soldiers.
The Winter War lasted Nov 1939 - March 1940. During those ~105 days the Swedes couldn't possibly have churned out enough tanks to make a difference.
Having the Swedes join in on re-taking occupied Finnish territory in 1941 when the Continuation War was started is another thing. That would effectively have put them on the opposite side of the Allies though.
Tens of thousands MG"s by 1942 with simular strategies like the germans (The soldiers support the LMG)
The core of the Finnish officer corps were trained in Germany and the Finnish army was shaped according to Prussian and Swedish forms. The Winter War was a disaster for both Finnish and Soviet sides, but the Swedish didn't have enough by the start of the war to make a difference if they wanted to have a believable defense against the Germans too.
Still, they sent IIRC ~1/3 of their air force and tons of equipment.
The Continuation War might have looked differently, as the Germans would technically be on the same side and not a threat, but that adds them to the list of Allied enemies as well, especially later in the war when people started finding out about the dark side of the German "machinery".
Powerfull AA-defenses and upgraded artillery
A lot of that in static form. Especially naval defense. They could've sent us some Bofors 40mm, but either way Winter war is a no-no - Continuation War, maybe.
Comparable to the german army? no but heck alot better then the other axis nations like Romania, Hungary and such
Oh? Sounds a bit different than:
Sweden was a well equipped army. Highly trained, professional..You name it.
Very good weapons. And a army well made
I don't think anyone expected them to be on the level of Germany, but "you name it" implies a lot more.
They were well equipped
towards the end of the war, which Finland was to some extent too at the end, having received StuGs, BF109s, hand-held AT-weapons, proper uniforms, artillery pieces that weren't looted from museums and enough artillery rounds to make a difference. Naturally Sweden was on a higher level, not being under attack and all.
Finns sometimes like to criticize the Swedes for not doing more, but in the end they did what they thought they could afford without weakening themselves against the Germans and at the same time not getting on the Allies' bad side. Just like the Finns did through post-war diplomacy (bowing to the east without mooning the west).