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60.000.000
100.000.000
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reduction bonuses are multipling together thats why u may thing bonus is not working properly.

if u have cement at 10 + this 15 u get 0,9*0,85 bonus > 76.5 of norm price instead of 75 u expect
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lvl1>lvl10 Rises by about 20%

lvl11 plus goes up by 10% tj 15 levels is 4.2 times
I guess after 35lvl it slows down bit more (7.5% per level?) which would be about those 3x times up :)

Without any boost 1 hp = 1min

any boost will multiply it by 1-( boost in % /100)

for example u have deadly bridge thingy and faction i 25%

without boost 1hp = 1m (60s)
with both boost it...

All the time same question in 300 threads :)

Speaking in general terms

More units u have more likely u lose, more of same u have higher chance to loose one of those.

Now the important bit
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I Have to agree. on top of that programmer is more often than not being told priorities and what to do by people who haven't slightest clue about programing ... and its even worse when online part is...

Hmm there is nothing wrong with this ... i would not specify but above some multiplier your att / rival deff u loose more or none units ...
when you get above this number every 1k of his defense...

I think most of u loosing too many units are loosing them because your profile show funny figures nowhere close to reality.

If your faction has attack bonuses on units those numbers can be as much...

I thought about this from programmer side ( i do not program much anymore, but in past i did )

Any sane person doing 4 platforms (ios, android, google+, FB) for 4 different game with same basic...

I am playing on Iphone my stats are what they should.

AFAIK issue with android is in profile instead adding bonuses together (as server side is doing) is multiplying them. ie u have 20 from bonus...