No, it was larger than many of the other browsers (like Opera), and size wasn't different enough to matter. Back then, download time was entirely quantized by "one night", because the only thing that mattered was that it finished by morning so someone picking up the phone wouldn't sever the dialup connection. A substation piece of software, like a browser, was happening during sleep time, regardless of size, and rare, so two night would also be fine (resuming was trivial with ftp, where these were sourced, usually from university mirrors).