私は彼らがそうだと疑います。テキストベースのブラウザは、(デフォルトで)画像などのリソースや、フォント(必要な場合)、スクリプトなどの外部エンティティもダウンロードするとは思わない
lynxとwgetの両方でこのIANAページ(http://www.iana.org/domains/reserved)を取得しようとするtcpdumpでいくつかの基本的なテストを行い、ここに結果がありました(HTTPコマンドのみ、残りは提供できます)必要に応じて)。
lynx http://www.iana.org/domains/reserved
4 0.072774 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /domains/reserved HTTP/1.0
10 0.146971 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (text/html)
wget -p http://www.iana.org/domains/reserved
4 0.072139 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /domains/reserved HTTP/1.0
22 0.145905 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (text/html)
28 0.219381 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /robots.txt HTTP/1.0
30 0.291877 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (text/plain)
32 0.292550 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/screen.css HTTP/1.0
94 0.440388 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (text/css)
100 0.514652 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/print.css HTTP/1.0
132 0.660071 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (text/css)
138 0.733546 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_img/bookmark_icon.ico HTTP/1.0
154 0.878227 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
160 0.950713 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_js/2013.1/jquery.js HTTP/1.0
277 1.172095 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/x-javascript)
283 1.244571 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_js/2013.1/iana.js HTTP/1.0
285 1.317059 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK
287 1.317609 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_img/2013.1/iana-logo-header.svg HTTP/1.0
332 1.464356 192.0.32.8 -> xx.xx.xx.xx HTTP/XML HTTP/1.1 200 OK
337 1.536749 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_img/2013.1/icann-logo.svg HTTP/1.0
348 1.610449 192.0.32.8 -> xx.xx.xx.xx HTTP/XML HTTP/1.1 200 OK
353 1.682727 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/fonts/OpenSans-Light.ttf HTTP/1.0
658 2.552776 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
663 2.625015 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/fonts/OpenSans-Regular.ttf HTTP/1.0
926 3.063537 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
932 3.135931 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/fonts/OpenSans-Semibold.ttf HTTP/1.0
1216 3.573481 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
1222 3.645984 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/fonts/OpenSans-Bold.ttf HTTP/1.0
1500 4.012966 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
1506 4.085693 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2013.1/fonts/Inconsolata.otf HTTP/1.0
1584 4.304016 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
1589 4.376612 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_img/2011.1/icons/icon_alert.png HTTP/1.0
1592 4.449311 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (PNG)
1594 4.449930 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_img/2013.1/iana-logo-homepage.png HTTP/1.0
1627 4.596125 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (PNG)
1633 4.668596 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_img/2013.1/iana-logo-homepage@2x.png HTTP/1.0
1704 4.895581 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (PNG)
1710 4.968097 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2011.1/fonts/OpenSans-Light.ttf HTTP/1.0
1982 5.364584 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
1988 5.438091 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2011.1/fonts/OpenSans-Regular.ttf HTTP/1.0
2243 5.830353 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
2249 5.902861 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2011.1/fonts/OpenSans-SemiBold.ttf HTTP/1.0
2259 5.976674 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 404 NOT FOUND (text/html)
2263 6.047876 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2011.1/fonts/OpenSans-Bold.ttf HTTP/1.0
2533 6.415590 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
2539 6.487909 xx.xx.xx.xx -> 192.0.32.8 HTTP GET /_css/2011.1/fonts/Inconsolata.otf HTTP/1.0
2616 6.720477 192.0.32.8 -> xx.xx.xx.xx HTTP HTTP/1.1 200 OK (application/octet-stream)
wget
ブラウザではダウンロードできないかもしれないリソースをダウンロードするかもしれないので、これは素晴らしいテストではないことを理解していますが、私が考える例はそうです。そのため、GUIブラウザは通常、テキストベースのブラウザよりも多くのネットワークトラフィックを引き起こします。