I disagree. According to Debian's own documentation, apt is a newer front-end for your daily CLI updating and installing needs.
It has simplified syntax, and combines the most-used functions and options.
It is not meant for use in scripts, cause the syntax may change between versions.
The dependency-solver in the back-end is identical.
tl/dr:
apt is shorter to type and will have prettier output, starting with Debian 13.
Use apt-get inside scripts.
That's actually one of the reasons I switched from Debian to Arch.
Dependency resolution shouldn't differ based on which front-end you use.
Debian has dpkg, aptitude, apt-get, apt, synaptic, the Software Center...
Fedora has rpm, dnf, yum. SUSE adds a couple more. I don't get it.
A linux distro should have one package manager, doing different stuff with it should be done via different commands/options inside it.
As a (still) Linux novice, this is something that I noticed with later distributions but never thought about your valid point. I did always wonder why there should be different places to install things in the same OS. It would probably be fine if they handled things the same, but then all you're doing is changing the UI. It never "felt" like they did things the same.