Looking at the specs of the Hs-129, it was been able to carry 6x50= 300 kg of bombs, vs. the Ju-87 carrying vastly more, up to 1800 kg in -D 'line', and up to 1000 kg in the -B line. Of course, Stukas were also able to carry multiple bombs; not all the targets require 1 ton bombs. The Hs-129 does not offer much of a save - we need anywhere from 3 to six of them to deliver the punch the Stuka was capable for, that is 3 to 6 times as number of pilots*, and 6 to 12 times the number of powerplants.
Ju-87Ds were also available as 'assault aircraft', that is without dive brakes, and with cannons, and the armor was bolstered when the -D was introduced.
*Stukas have/need rear gunners, though; Hs-129 also need a gunner, but can't have it
A little 'selective' in the warload Tomo?
The Early Ju-87s had 'normal' bombload of one 250kg bomb and four 50kg bombs, The Early Hs 129s could carry one 250kg bomb and two 50kg bombs. Doesn't seem like a big advantage for the Ju-87, granted the Ju-87 can go to heavier bombs and ditch the under wing bombs. Of course the Hs 129 was carrying TWO 20mm MG 151s and TWO MG 17s at the same time as the bomb load compared to the JU-87s TWO MG 17s. DO you think the 20mm cannon (with 125rpg) just might be worth the two extra 50kg bombs? The Hs 129 had better cockpit armor too.
For
most battlefield targets the heavy bombs weren't needed (both planes had options to carry extra machine guns for strafing) and they didn't do the same job a lot of the time. By late in the war the majority of the Ju-87 were operating at night while the Hs 129s were operating by day.
The 3-6 comparison is only valid if your are trying to sink battleships or take-out large concrete fortifications.
Later versions of both planes changed armament a bit and the Ju-87 got more power.
In Czechoslovakia, there is the 'Avia' company, design production of fighters (B.35, B.135 - almost as good as SPitfire I and Bf-109E), production of B.71 (license of the SB-2, a Soviet design); country also has license for the HS 12Y and Mercury engines. In Poland, there are substantial production lines, also Mercury produced under license.
In the Netherlands, Belgium and France, there is another lot of production lines. In Yugoslavia, there were Ikarus and Rogozarski factories, that produced either own designs or licensed stuff.
There is also a big difference between a
production line than is set up to make a dozen or two dozen engines a month and one that can make two dozen engines a day. Many of the smaller countries had a licence to produce and a 'factory' or shop that turned out engines by the handful per month.
From wiki:
" Production of the P.11c started in 1934 and 175 were produced. The first series of approximately 50 P.11c aircraft were fitted with Mercury V S2 of 600 hp (447 kW), the rest with Mercury VI S2 of 630 hp (470 kW).[1]"
Please note that it does NOT say how long it took to produce the 175 aircraft. this is followed by,
"Even without the new WP2 plant at Mielec, the PZL works could produce at least 10 fighters every month"
Or look at the Romanian IAR 80 series, it took from Dec of 1939 until sometime in 1944 to build 346 planes. Granted their were starts and stops in production due to supply problems with guns (Germans weren't exactly forthcoming with even war booty guns) but with a production rate that low (average of under 10 planes a month although any one month might well have been double the average) the 'production line' for engines didn't have to be very big.
Some of these countries made some nice airplanes during the 30s but never in enough numbers to really compare to what the major countries were doing in peace time let alone when the shooting started. A years production form some of these factories might make up for a weeks worth of losses in a heavy combat week.