Resistance as a function of base voltage in a transistor
This is a more suitable diagram of a BJT's voltage and current characteristic: -



In the picture there are several curves; each for a different base current injected. So here's the first difference - base is normally depicted as being fed with a current not a voltage because this is more relevant - the BJT is likened to a device which amplifies current and has a current gain (Ic/Ib).

The next difference - imagine Ib was held at 150uA and you varied Vce and looked at Ic. The curve is right there in the picture above. If it were a resistive characteristic you'd see Ic rise linearly with applied Vce. As you can hopefully see, this is far from the case.

Typically once Vce has reached about 2 or 3 volts, Ic is very flat for quite significant changes in Vce - between 5 and 15 volts applied, Ic varies from about 16mA to about 17mA.

This is because a BJT acts like a current amplifier - a fixed base current of 150uA produces a largely fixed collector current of about 17mA i.e it has a current gain of about 113.

For a base current of 200uA, the collector current is about 23mA i.e. there is a current gain of about 115 - pretty much the same for the base current of 150uA.

Hopefully you can understand it's not a simple as the article seems to say.