Thats the point. And the clear answer is no.
Bitcoin has proven to be secured against attacks. The more hashrate the whole network gains, the harder it will get for anyone trying to gather 50%+ of the networks hashrate.
Additionally it is hard to value whether an altcoin is 'cheap' compared to BTC. This would imply that BTC is expensive at the moment. And thats pretty much impossible to value accurately.
Considering bitcoins value (not the price), people have different perspectives regarding the price. While it may seem undervalued for the one, it is way too overpriced for the other.
Just because the market cap of an altcoin is 1/100 of BTC, this doesn't mean that it will have bigger gains.